> And now passive investing has removed price discovery from the equity markets. The simple theses and the models that get people into sectors, factors, indexes, or ETFs and mutual funds mimicking those strategies -- these do not require the security-level analysis that is required for true price discovery.
Passive investing is, for the most part, not funging against dollars that would have gone to high quality asset managers. It is removing noise in the form of retail speculation from the market. Asset managers that consistently beat the market (i.e. facilitate price discovery) have no problem raising capital.
> “In the Russell 2000 Index, for instance, the vast majority of stocks are lower volume, lower value-traded stocks. Today I counted 1,049 stocks that traded less than $5 million in value during the day. That is over half, and almost half of those -- 456 stocks -- traded less than $1 million during the day. Yet through indexation and passive investing, hundreds of billions are linked to stocks like this. The S&P 500 is no different -- the index contains the world’s largest stocks, but still, 266 stocks -- over half -- traded under $150 million today. That sounds like a lot, but trillions of dollars in assets globally are indexed to these stocks. The theater keeps getting more crowded, but the exit door is the same as it always was. All this gets worse as you get into even less liquid equity and bond markets globally.”
Trading volume != liquidity. They are related, but only indirectly. Liquidity is, for the most part, provided by market makers. Market makers are entities willing to take both sides of orderbook at all (or almost all) times. Most of the time, when you trade a stock, your counter-party is a market maker. Even if nobody is trading, that market maker is still providing liquidity. The liquidity is there, even if no shares are changing hands.
Where this gets tricky is that market makers make their money by trading. If there is less volume, they may be willing to provide less liquidity. But it's not at all clear that this is a real problem yet, or that there is any major crisis of liquidity in the markets. The correct way to measure this is not to look at daily volume, but at slippage. How much does the market move when you attempt to buy a large block? I'm not certain, but I don't think this is a major problem for people right now.